Supporting legs

Abstract

The application provides a support stand. The support stand comprises a seat body, a plurality of supporting legs arranged on the side or bottom of the seat body, a rotating cavity for rotating a ball cup formed on the top of the seat body, a mounting position for assembling equipment arranged on the top of the ball cup, and a locking hole opened on the bottom of the ball cup along the axial direction of the ball cup; and a locking assembly arranged on the seat body, comprising a locking part capable of being inserted into the locking hole and a driving part slidingly or swingably arranged on the seat body and used for pulling the locking part to move along the axial direction away from the locking hole, wherein an elastic member is connected between the locking part and the seat body and used for pushing the locking part to be inserted into the locking hole; a limiting structure is arranged on the seat body, and a limiting member is arranged on the driving part and capable of cooperating with the limiting structure to keep the locking part in the axial position away from the locking hole. The support stand provided by the application is simple and convenient in the operation of locking and releasing the ball cup and is more suitable for shooting scenes requiring quick operation.

Description

Technical Field

[0001] This application belongs to the field of photographic equipment technology, and more specifically, relates to a support tripod. Background Technology

[0002] In the field of photographic equipment, some types of tripods are equipped with a detachable ball head, which is used to mount quick-release plates or other ball head devices. Specifically, a ball head generally includes a rotating cavity set on the tripod base and a ball head rotatably set in the rotating cavity. The top of the ball head is generally used to mount photographic equipment.

[0003] To achieve locking or releasing of the ball head in an upright position, the existing technology has the following settings.

[0004] For example, in the Chinese patent with authorization announcement number CN210890810U, the locking structure adopts a spiral locking method. This locking method requires the photographer to rotate continuously to switch the position of the ball head, which is cumbersome and not suitable for operating environments that require quick switching of the position of the photographic equipment.

[0005] For example, in Chinese patent CN112879762A, the locking structure uses a foot pedal drive. Specifically, one end of the foot pedal is fixedly connected to a sliding lock guide groove, and the foot pedal drives the sliding lock guide groove to move, thereby completing the unlocking. However, the sliding lock guide groove is relatively heavy, and the foot pedal is difficult to operate, increasing the difficulty of use. Summary of the Invention

[0006] The purpose of this application is to provide a support tripod to solve the technical problems in the prior art, such as slow switching speed of photographic equipment position status and laborious operation due to cumbersome operation.

[0007] To achieve the above objectives, the technical solution adopted in this application embodiment is to provide a support frame, which includes: The base has several legs on its side or bottom, a rotating cavity for rotating and setting the ball cup is formed on the top of the base, a mounting position for assembling equipment is provided on the top of the ball cup, and a locking hole is provided on the bottom of the ball cup along its axial direction. A locking assembly is disposed on the base body, including a locking part that can be inserted into the locking hole and a driving part that is slidably or oscillatingly disposed on the base body for pulling the locking part to move axially away from the locking hole. An elastic member is connected between the locking part and the base body, and the elastic member is used to push the locking part to be inserted into the locking hole. A limiting structure is provided on the base, and a limiting member is provided on the drive part. The limiting member can cooperate with the limiting structure to keep the locking part in an axial position away from the locking hole.

[0008] Optionally, the driving part is slidably disposed on the bottom of the seat body along the axial direction and connected to the locking part; or, the driving part is oscillatingly disposed on the side of the seat body and partially abuts against the locking part, and the driving part pulls the locking part to slide along the axial direction when it oscillates.

[0009] Optionally, the limiting structure is a limiting protrusion formed on the side wall of the seat, and the limiting member is an abutment rod disposed on the driving part. When the driving part slides axially, the abutment rod can rotate to abut against the bottom wall of the limiting protrusion.

[0010] Optionally, the driving unit is rotatably disposed on the base, and the abutting rod is fixedly disposed on the driving unit in the circumferential direction.

[0011] Optionally, the abutment rod is axially movably disposed on the drive unit, and an elastic element is connected between the drive unit and the abutment rod.

[0012] Optionally, the limiting structure is at least one limiting groove provided on the seat, and the limiting member is a slide rod provided on the driving part. The slide rod can move to different positions in the limiting groove or different limiting grooves as the driving part swings.

[0013] Optionally, the limiting groove is provided in a closed loop shape with multiple corners; multiple locking positions are formed at different circumferential positions of the limiting groove and at the corners.

[0014] Optionally, the drive unit is unidirectionally swinging on the seat, and the slide rod is slidably disposed on the foot drive unit in a direction perpendicular to the axis of the seat; when the drive unit swings up and down, the slide rod can slide left and right on the drive unit to switch to different locking positions.

[0015] Optionally, the seat body has an inner cavity, and the locking part slides through the rotating cavity and the inner cavity; the driving part is partially located in the inner cavity, and the portion of the driving part located in the inner cavity is connected to or abuts against the locking part.

[0016] Optionally, the ball cup is a hollow hemispherical shape, and a clamping assembly is connected between the hollow interior of the ball cup and the base body. The clamping assembly is used to make the outer wall of the ball cup abut against the cavity wall of the rotating cavity; or, the ball cup is a hollow sphere, and the ball cup can rotate omnidirectionally in the rotating cavity.

[0017] Optionally, the clamping assembly includes a bolt and a clamping member that abuts against the inner wall of the ball cup. The bolt passes through the locking hole, rotates axially through the seat, and is threadedly connected at one end to the clamping member.

[0018] Optionally, a lever is provided on the base, one end of which is threadedly connected to the other end of the bolt; when the lever rotates, it drives the bolt to move axially.

[0019] Optionally, a bearing is fitted around the circumferential outer side of the bolt, and the two opposite end faces of the bearing abut against the seat and the lever, respectively.

[0020] Optionally, a positioning element is rotatably arranged in a circumferential array on the bottom or side of the seat, and an elastic element is connected between the positioning element and the seat; the positioning element has a positioning surface on the side facing the support leg and a stop surface on the side facing the seat; when the positioning surface abuts against the support leg, the elastic element is used to keep the stop surface abutting against the seat so that the support leg is stable in a supported state.

[0021] Optionally, two positioning surfaces are formed on the positioning member, and a guide surface is provided between the two positioning surfaces; when the support leg contacts different positioning surfaces, the support leg is at different support angles.

[0022] The support bracket provided in this application embodiment has at least the following beneficial effects: By sliding or swinging the drive unit onto the base, and moving it axially along the base to pull the locking part out of the locking hole of the cup, the cup can rotate within the rotating cavity, thus unlocking the cup to its upright position. Simultaneously, an elastic element connects the locking part to the base, pushing the locking part axially towards the cup. Thus, when the drive unit is released, the locking part approaches the cup and inserts into the locking hole to lock it in place. The locking and releasing operation of the cup is simple and convenient, making it more suitable for shooting scenarios requiring rapid operation. Furthermore, the limiting structure for locking the cup in its upright position is located on the base, reducing the drive load on the drive unit and allowing the user to easily operate it. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a perspective view of the support frame in some embodiments of this application; Figure 2 This is a cross-sectional view of the support legs in some embodiments of this application; Figure 3 This is a cross-sectional view of the support legs in some embodiments of this application; Figure 4 This is a cross-sectional view of the support legs in some embodiments of this application; Figure 5 This is a cross-sectional view of the base of some embodiments of this application; Figure 6 This is a perspective view of the support frame in some other embodiments of this application; Figure 7 This is a cross-sectional view of the support legs in some other embodiments of this application; Figure 8 This is a cross-sectional view of the support legs in some other embodiments of this application; Figure 9 This is a cross-sectional view of the support legs in some other embodiments of this application; Figure 10 This is a cross-sectional view of the support legs in some other embodiments of this application; Figure 11 This is a schematic diagram of the limiting groove in some other embodiments of this application; Figure 12 This is a perspective view of the foot pedal in some other embodiments of this application; Figure 13 This is a cross-sectional view of the ball cup in some other embodiments of this application; Figure 14 This is a perspective view of the positioning element in some embodiments of this application. Detailed Implementation

[0025] To make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following describes this application in further detail with reference to the accompanying drawings and embodiments.

[0026] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0027] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or indirectly on that other component.

[0028] When a component is said to be "connected to" another component, it can be directly connected to the other component or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0031] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0032] Please refer to the following: Figures 1 to 14 The support legs provided in the embodiments of this application will now be described.

[0033] refer to Figures 1 to 4 , Figures 6 to 10 The support frame described in this application includes a base 100 and a locking assembly 400.

[0034] Specifically, a number of support legs 200 are provided at the bottom or side of the seat body 100. The support legs 200 can be rotatably mounted on the seat body 100 or telescopically mounted on the seat body 100, and are not limited thereto. The support legs 200 are used to provide support for the seat body 100 so that the seat body 100 can be stably mounted on the support surface.

[0035] A rotating cavity 110 is formed on the top of the base 100, which is used to rotate and set the ball cup 300. It can be understood that an assembly platform is provided on the side of the ball cup 300 away from the support leg 200. The assembly platform is used to assemble photographic equipment, such as quick-release plates, quick-release mounts, or cameras, camcorders, etc.

[0036] It is understood that the rotating cavity 110 and the ball cup 300 can be configured in several ways. In some configurations, the rotating cavity 110 is a spherical cavity larger than half the size of a sphere, and correspondingly, the ball cup 300 is a spherical shape larger than half the size of a sphere. In this way, the ball cup 300 can rotate omnidirectionally within the rotating cavity 110 and can be held within the rotating cavity 110 without other limiting components; for example, the ball cup 300 is a hollow sphere, and the ball cup 300 can rotate omnidirectionally within the rotating cavity 110. In other configurations, the rotating cavity 110 is a spherical cavity of half the size of a sphere, and correspondingly, the ball cup 300 is a half-sphere. It should be understood that in this configuration, the ball cup 300 is centrally located, and a clamping component 500 for confining the ball cup 300 within the rotating cavity 110 is provided inside the hollow interior of the ball cup 300.

[0037] A locking hole 310 is provided at the bottom of the cup 300 along its axial direction. It should be understood that the aforementioned axial direction refers to the vertical distance between the bottom of the cup 300 and the assembly platform when the assembly platform on the cup 300 is perpendicular to the axis of the base 100; that is, when the assembly platform on the cup 300 is perpendicular to the axis of the base 100, the axis of the cup 300 coincides with the axis of the base 100.

[0038] The locking assembly 400 is disposed on the base 100 and includes a locking part 410 that can be inserted into the locking hole 310 and a driving part 420 for pulling the locking part 410 to move axially away from the locking hole 310.

[0039] Understandably, reference Figures 1 to 4 The drive unit 420 can be axially slidably disposed on the base 100, and part of it is connected to the locking part 410, that is, the drive unit 420 is configured as a pull handle. In this way, when the drive unit 420 slides, it can pull the locking part 410 away from the locking hole 310, thereby unlocking the cup 300 from the upright position, allowing the cup 300 to rotate freely in the rotating cavity 110; at the same time, the drive unit 420 can be directly pulled by hand, which is faster than the screw unlocking method in related technologies.

[0040] refer to Figures 6 to 10 The drive unit 420 can also be oscillatingly mounted on the base 100, with one end of it located on one side of the oscillation axis connected to the locking part 410. That is, the drive unit 420 can be configured as a foot pedal. In this way, when the drive unit 420 oscillates, it can pull the locking part 410 away from the locking hole 310. At the same time, the drive unit 420 can be configured as a foot pedal or a press plate to achieve one-way, single-press unlocking, which also has an advantage in terms of operating speed compared to the spiral unlocking operation method in related technologies.

[0041] It should be understood that the locking assembly 400, in addition to the locking part 410 and the driving part 420 described above, also includes an elastic member 430 connected between the base 100 and the locking part 410. The elastic member 430 is configured to be in a compressed state when the locking part 410 leaves the locking hole 310. With this configuration, when the driving part 420 is released, the elastic member 430 can push the locking part 410 into the locking hole 310.

[0042] Furthermore, it should be understood that since an elastic element 430 is connected between the locking part 410 and the seat 100, if only the driving part 420 is provided, the driving part 420 needs to be manually kept in the unlocked position after each unlocking and release so that the elastic element 430 is always kept in the compressed state.

[0043] Therefore, to facilitate the unlocking and releasing operation, a limiting structure is provided on the base 100, and a limiting member is provided on the drive unit 420 to cooperate with the limiting structure to keep the locking part 410 in an axial position away from the locking hole 310. The limiting structure has a first locking position and a second locking position for fixing the drive unit 420, and the limiting member can switch back and forth between the first locking position and the second locking position as the drive unit 420 moves. In the first locking position, the locking part 410 is restricted to an axial position away from the locking hole 310, and the elastic member 430 is compressed. In the second locking position, the elastic member 430 is released and lifts the locking part 410 to fix it in the locking hole 310.

[0044] In summary, the support tripod of this application has the advantages of simple and convenient locking and releasing of the ball cup 300, which is more suitable for shooting scenarios that require quick operation. On the other hand, the limiting structure is set on the base 100, and only a lightweight limiting component is set on the drive unit 420, resulting in a smaller drive load on the drive unit, making operation less strenuous and convenient.

[0045] It should be understood that the limiting structure has multiple implementations depending on the different configurations of the drive unit 420.

[0046] refer to Figures 1 to 4Corresponding to the arrangement where the drive part 420 is axially slidably disposed at the bottom of the seat 100 and connected to the locking part 410 (i.e., the aforementioned handle arrangement), in some embodiments, the limiting structure is a limiting protrusion 121 formed on the side wall of the seat 100. In this case, the limiting member is an abutment rod 122 disposed on the handle. When the handle slides axially, the abutment rod 122 can rotate to abut against the bottom wall of the limiting protrusion 121. When the abutment rod 122 abuts against the bottom wall of the limiting protrusion 121, the tendency of the handle to move axially toward the ball cup 300 is limited by the limiting protrusion 121, thereby limiting the locking part 410 to an axial position away from the locking hole 310 (i.e., the first locking position), thereby allowing the ball cup 300 to rotate and adjust in the rotating cavity 110.

[0047] It should be understood that the abutment rod 122 can be rotatably mounted on the handle, or it can be fixed circumferentially to the handle and the handle rotatably mounted on the base 100. By making the limiting protrusion 121 such that the abutment rod 122 needs to rotate to enter it, compared to a design that moves axially to engage the limiting protrusion 121, the number of connecting parts between the abutment rod 122 and the handle can be reduced, simplifying the connection structure as much as possible, and improving stability and reliability during rapid operation.

[0048] In some embodiments, the handle is rotatably mounted on the base 100, and the abutment rod 122 is fixedly mounted on the handle in the circumferential direction. Thus, during assembly, the abutment rod 122 can be easily mounted onto the handle, and then the integrated handle and abutment rod 122 can be assembled together onto the base 100, thereby facilitating the assembly process of the support frame.

[0049] Specifically, a long slot 421 is provided on the pull handle along its axial direction. At the same time, a pin is provided on the abutment rod 122 for insertion into the slot 421. Thus, when the pin is inserted into the slot 421, the circumferential position of the abutment rod 122 on the pull handle is fixed, and the assembly between the abutment rod 122 and the pull handle is simple and convenient.

[0050] Furthermore, in some embodiments, the abutment rod 122 is axially movably disposed on the pull handle, and an elastic element is connected between the pull handle and the abutment rod 122. It is understood that the elastic element 430 can be a coil spring, a disc spring, etc., and the elastic element is always in a compressed state. By connecting the elastic element between the two, the axial position of the abutment rod 122 is fixed by the elastic element, facilitating the assembly of the abutment rod 122.

[0051] refer to Figures 6 to 12Corresponding to the drive unit 420 being oscillatingly disposed on the seat 100 with one end located on one side of the oscillation axis connected to the locking unit 410 (i.e., the aforementioned foot pedal structure), in some embodiments, the limiting structure is a limiting groove 131 provided on the seat 100, and in this case, the limiting member is a sliding rod 132 provided on the foot pedal. When the foot pedal oscillates, the sliding rod 132 can move to different positions in the limiting groove 131 or different limiting grooves 131 following the oscillation of the foot pedal. It should be understood that two limiting grooves 131 can be provided, in which case the first locking position and the second locking position are located in two different limiting grooves 131; or, only one limiting groove 131 can be provided, in which case the first locking position and the second locking position are located at different height positions in the limiting groove 131.

[0052] refer to Figure 11 Furthermore, the limiting groove 131 is provided in a closed loop shape with multiple corners. The first locking position and the second locking position are located at different circumferential positions of the limiting groove 131 and are both located at corners. Moreover, the first locking position and the second locking position are located at different height positions of the limiting groove 131. In some embodiments, the limiting groove 131 can be configured as a roughly heart-shaped closed loop, with the first locking position located at the top corner of the heart-shaped limiting groove 131 and the second locking position located at the bottom corner of the heart-shaped limiting groove 131.

[0053] When the foot pedal is pressed down and swung, the slide bar 132 abuts against the groove wall of the "heart" shaped limiting groove 131, and under the swinging action of the foot pedal, it can move in the opposite direction in the "heart" shaped limiting groove 131 to move to the first locking position or the second locking position.

[0054] By configuring the limiting groove 131, the first locking position, and the second locking position in this way, at least the following advantages are achieved: The second locking position is positioned at the bottom corner of the heart-shaped limiting groove 131, so that when the foot pedal is not pressed, the locking part 410 remains inserted into the locking hole 310 under the elastic force of the elastic member 430. When the foot pedal is pulled by the locking part 410, the sliding rod 132 on it is restricted to the second locking position. When the foot pedal is pressed to unlock, the sliding rod 132 can smoothly leave the second locking position along the channel of the heart-shaped limiting groove 131. The first locking position is positioned at the top corner of the heart-shaped limiting groove 131, so that when the sliding rod 132 enters the first locking position, the blocking force at the corner restricts the sliding rod 132 to the first corner position, thereby allowing the locking part 410 to remain in an axial position away from the locking hole 310.

[0055] refer to Figures 6 to 10In a specific embodiment, the foot pedal is unidirectionally swinging on the seat 100 (i.e., vertically swinging), and the slide rod 132 is slidably placed on the foot pedal in a direction perpendicular to the axis of the seat 100. Thus, when the foot pedal swings up and down, the slide rod 132 can slide left and right on the foot pedal under the guidance of the groove wall of the limiting groove 131, so as to smoothly move to the first locking position or the second locking position.

[0056] refer to Figure 4 , Figure 5 and Figure 10 It is understood that in some embodiments, the seat 100 further includes an inner cavity 140, with the locking part 410 slidably passing through the rotating cavity 110 and the inner cavity 140; the driving part 420 is partially located in the inner cavity 140, and the portion of the driving part 420 located in the inner cavity 140 is connected to or abuts against the locking part 410. By providing an inner cavity 140 in the seat 100, the limiting structure in the aforementioned embodiments can be disposed within the inner cavity 140, thus avoiding exposure of the relevant structures and making the overall appearance of the seat 100 more concise.

[0057] Specifically, in the aforementioned embodiment where the drive part 420 is a pull handle, the pull handle passes through the inner cavity 140 and is connected to the locking part 410, while the limiting protrusion 121 is formed on the side wall of the inner cavity 140; in the aforementioned embodiment where the drive part 420 is a foot pedal, the limiting groove 131 is also formed on the side wall of the inner cavity 140.

[0058] It is understood that in some specific embodiments, the cup 300 is a hollow hemisphere. Correspondingly, a clamping assembly 500 is connected between the hollow interior of the cup 300 and the seat 100. The clamping assembly 500 is used to abut the outer wall of the cup 300 against the cavity wall of the rotating cavity 110. In this way, by making the cup 300 hemisphere, it is convenient to assemble the cup 300 into the rotating cavity 110. At the same time, when the locking part 410 is lifted by the elastic member 430 to press against the bottom of the cup 300, the clamping assembly 500 can prevent the cup 300 from dislodging from the rotating cavity 110.

[0059] refer to Figure 2 , Figure 3 , Figure 7 , Figure 9 and Figure 13In some specific embodiments, the clamping assembly 500 includes a bolt 510 and a clamping member 520 that abuts against the inner wall of the cup 300. The bolt 510 passes through the locking hole 310, is rotatably mounted on the seat 100, and is threadedly connected at one end to the clamping member 520. Specifically, the clamping member 520 includes an arc-shaped pressure block and a nut disposed on the pressure block. The contact area between the pressure block and the cup 300 is larger than the area of ​​the locking hole 310. The bolt 510 passes through the locking hole 310 and the pressure block and is threadedly connected to the nut. At the same time, the pressure block is supported by a material with a certain elasticity, such as plastic or silicone. Thus, it can provide a certain damping for the rotation of the cup 300 in the rotating cavity 110, thereby improving the adjustment feel of the cup 300.

[0060] By setting the clamping assembly 500 as a bolt 510 and a pressure block, the tightness between the bolt 510 and the pressure block is adjustable, that is, the tightness between the ball cup 300 and the rotating cavity 110 is adjustable, thereby realizing the adjustable setting of the damping of the ball cup 300 in the rotating cavity 110.

[0061] Further reference Figure 9 To facilitate the adjustment of the tightness between the bolt 510 and the pressure block, in some embodiments, a lever 530 is provided on the seat 100. One end of the lever 530 is threadedly connected to the other end of the bolt 510. When the lever 530 rotates, the bolt 510 moves axially under the drive of the thread, thereby pulling the pressure block against the inner wall of the ball cup 300 or pushing the pressure block to loosen the inner wall of the ball cup 300, thereby achieving the purpose of adjusting the rotational friction between the ball cup 300 and the rotating cavity 110.

[0062] Furthermore, refer to Figure 9 A bearing 540 is fitted around the circumferential outer side of the bolt 510, with its two opposite end faces abutting against the seat 100 and the lever 530, respectively. It should be understood that the bearing 540 is a thrust bearing. By placing the bearing 540 between the seat 100 and the lever 530, the resistance during the rotation of the lever 530 (especially increasing the damping of the ball cup 300) can be effectively reduced, allowing the user to adjust the damping with only a small force.

[0063] Specifically, since the upper and lower end faces of the bearing 540 abut against the seat 100 and the lever 530 respectively, when the lever 530 rotates to pull the pressure block against the inner wall of the ball cup 300, the lever 530 tends to move upward relative to the bolt 510, while the bolt 510 tends to move downward relative to the lever 530. Since the upper end face of the lever 530 can be supported, when it drives the bolt 510 to move downward, it can abut against the lower end face of the bearing 540, and can maintain smooth rotation under the rotation action of the bearing 540, thereby reducing the force required for the user to pry the lever 530.

[0064] refer to Figures 1 to 10 and Figure 14 Based on any of the above embodiments, a positioning member 210 is provided between the base 100 and each leg 200. Specifically, the positioning member 210 is rotatably arranged in a circumferential array at the bottom or side of the base 100, and an elastic member 430 is connected between the positioning member 210 and the base 100; a positioning surface 211 is formed on the side of the positioning member 210 facing the leg 200, and a stop surface 212 is formed on the side facing the base 100; at the same time, a clearance surface 214 is inclinedly provided below the stop surface 212.

[0065] By simultaneously providing a stop surface 212, a positioning surface 211, and an elastic element 430 on the positioning element 210, the three work together to keep the positioning element 210 in a state that allows the support leg 200 to maintain stable support.

[0066] For example, when the support leg rotates downward, the support leg abuts against other surfaces on the positioning member 210 to synchronously push the positioning member 210 to swing downward. During this process, the elastic member 430 is used to keep the positioning member 210 swinging back. When the positioning member 210 swings to the point where its positioning surface 211 abuts against the support leg, the support leg 200 has a tendency to push the positioning member 210 to swing back under the action of the ground support force. Furthermore, due to the elastic force of the elastic member 430, the positioning member 210 swings back until the stop surface 212 abuts against the outer wall of the seat 100 and prevents the positioning member 210 from continuing to swing back. Therefore, the positioning member 210 can keep the support leg 200 in a stable support state.

[0067] When it is necessary to retract the support leg 200, continue to rotate the support leg 200 downwards. The support leg 200 pushes the positioning member 210 to swing downwards in sync. The stop surface 212 leaves the side wall of the seat body 100. At this time, by pressing the positioning member 210 to prevent it from resetting, the support leg 200 can be rotated upwards to achieve retraction.

[0068] refer to Figure 14 In a further embodiment, two positioning surfaces 211 are formed on the positioning member 210, and a guide surface 213 is provided between the two positioning surfaces 211. In this way, the support leg 200 rotates smoothly as it moves from the upper positioning surface 211 to the lower positioning surface 211.

[0069] By setting two positioning surfaces 211, the support leg 200 is at different support angles when it contacts different positioning surfaces 211, so as to adapt to more terrains and meet the needs of outdoor shooting as much as possible.

[0070] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A support frame, characterized in that, include: The base has several legs on its side or bottom, a rotating cavity for rotating and setting the ball cup is formed on the top of the base, a mounting position for assembling equipment is provided on the top of the ball cup, and a locking hole is provided on the bottom of the ball cup along its axial direction. A locking assembly is disposed on the base body, including a locking part that can be inserted into the locking hole and a driving part that is slidably or oscillatingly disposed on the base body for pulling the locking part to move axially away from the locking hole. The driving part is configured as a pull handle. An elastic member is connected between the locking part and the base body. The elastic member is used to push the locking part to be inserted into the locking hole. A limiting structure is provided on the base body, and a limiting member is provided on the drive part. The limiting member can cooperate with the limiting structure to keep the locking part in an axial position away from the locking hole. The driving part is slidably disposed at the bottom of the seat body along the axial direction and is connected to the locking part; The limiting structure is a limiting protrusion formed on the side wall of the seat body, and the limiting member is an abutment rod disposed on the driving part. When the driving part slides axially, the abutment rod can rotate to abut against the bottom wall of the limiting protrusion. The driving unit is rotatably mounted on the base, and the abutting rod is fixedly mounted on the driving unit in the circumferential direction; The abutting rod is axially movably disposed on the driving part, and an elastic element is connected between the driving part and the abutting rod; The seat has an inner cavity, and the locking part slides through the rotating cavity and the inner cavity; the driving part is located in the inner cavity, and the part of the driving part located in the inner cavity is connected to or abuts against the locking part; The ball cup is a hollow hemispherical shape, and a clamping assembly is connected between the hollow interior of the ball cup and the base body. The clamping assembly is used to make the outer wall of the ball cup abut against the cavity wall of the rotating cavity; or, the ball cup is a hollow sphere, and the ball cup can rotate omnidirectionally in the rotating cavity. The clamping assembly includes a bolt and a clamping member that abuts against the inner wall of the ball cup. The bolt passes through the locking hole, rotates axially through the seat, and is threadedly connected at one end to the clamping member. A lever is provided on the base, one end of which is threaded to the other end of the bolt; when the lever rotates, it drives the bolt to move axially.

2. The support frame as described in claim 1, characterized in that: A bearing is fitted around the circumferential outer side of the bolt, and the two opposite end faces of the bearing abut against the seat and the lever, respectively.

3. The support frame as described in claim 1, characterized in that: Positioning members are rotatably arranged in a circumferential array on the bottom or side of the base, and an elastic member is connected between the positioning members and the base. The positioning members have a positioning surface on the side facing the support leg and a stop surface on the side facing the base. When the positioning surface abuts against the support leg, the elastic member is used to keep the stop surface abutting against the base so that the support leg is stable in a supported state.

4. The support frame as described in claim 1, characterized in that: Two positioning surfaces are formed on the positioning member, and a guide surface is provided between the two positioning surfaces; when the support leg contacts different positioning surfaces, the support leg is at different support angles.

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